Valve construction



March 14, 1933. l,F H HALLER 1,901,237

` VALVE CONSTRUCTION Patented Mar. 14, 1933 en V-srArEs .SHA-nvm in. `IrL'Lnia,for Los ANGELES, oALrroRNI-AAssIGNoR :ro "rim wnirn Moron i i coMrANYyorLosANGELEs, oALIroRNra-A CORPORATION or CALIFORNIA' vAIivncoNsrRUcTIoN f Application ined July 19, i930. seriai No. 469,173.

My invention relatesto valve constructions, andcmore particularly to those for internal 'combustion engines wherein means are provided for eifectively compensating for any variations in ,temperature andv wear conditions, means' being Valso 'provided whereby an v4eifectivelubrication maybe had under all 'conditions of operation of said engine'. Y It accordingly is an object of my invention to provide a novel forniv of valve rcofnstructi on "adapt-'ed forspecial luse in connection with "internal combustion engines, said construct'i'nn'comprisilng a setA of shoes which are'no't only adapted'to be moved simultaneously but ing provided with means inthe shape of slots or `cnt-'out portions which render 'said shoe more elastic, and the shoe assemblyfprovidedL with a set of groovesrandpassageswhereby 'the contacting surfaces as well asthe upper and lower surfaces of said 'assemblyfmaybe eifecti'vely lubricated.' A l i The`aboveand furtherobjec'tsand advantages o'f my invention, as 'will hereinafter nore fully appear, I attain by the construction 'described in the specification and illustrated'inits preferred form on the drawing, forming apart of Vmy application. "Reference isf'had .to the accompanying drawing, lin which Ysimilar reference Character'sgdenote similar parts. yInthe drawing, Fig. l is a fragmentary cross-'sectionalview withfiny invention, A

Figa 2 is an enlarged perspective viewfof the upper compensating shoe, n, K

ig. Sis a cross-sectionalview, taken on the line 3-3, Fig. 2, d y f Fig. l is an enlargedcross-sectional view taken on .the line QL-,4, Fig. 3, *"Fig.. 5. is an enlarged perspective view .of the lower shoe, Figis a cross-sectional view, taken on theline 6--6, Fig. 5, y Fig. 7 isa bottom 4plan View of Fig. 6, Y Fig. 8 is a longitudinal. sectional View taken through the vertical center line of Fig. 1,*but on a smaller scale, and Y Fig. .9 is a fragmentary cross-sectional de- .tail view on a somewhat enlarged scale, 'illusof'aninternal combustion engine provided.

y c f lubricated. y relatively to each other, one offsaid shoes betrat-ing' more, particularly the cut-dlltpOjirtions of the V'valve casing.

Descrlbing my invention more in detail, in

itsbroader'aspects said inventioncomprises fa set .of coacting'g,l complementary,shoesdfor relative and simultaneous movement, v,one lof 'said shoes being providedwith slots orv cut;-

away portions to render `same more elastic,

the assembly being alsoj provided with a set of lubricating passages and groovesiufluid connection, whereby the yupper and l lower surfaces of the assembly, as'l well as the engaging surfaces willat alltiines effectively More specifically, lmy invention comprises anV internal"combustion engine 2,! provided with the usual .cooling channels,andavalve 'casing' or casting .lwhich has y .associated 'therewith a cylinder port y6', adaptedto controlledfby Va rotary lvalve 8, rotating" vin the direction `of, the arrow on Fig( 1, which valve Vhas aset of passages 10 adapted selec.-

tively to bring theinletport12in-connection withr thev cylinder port 6 and the exhaust port v14lin-*connection Vwith said cly'flinder port. 'if' The vvalve casing 4 hasacover l6,`d'etach` vably associated withf saidA casing by means of screw'` bolts 1S, andhas its innerisu'rface 'tapered as shown'i'n' Fig.-l,Tfor`afpurpose presently tobe described.

- .snavel-ve easing is aisnrpiovideawuh an adjustable bolt and spring' assenibly'QQthe bolt of which isk adaptedto engage witha depression QQin' onelen'd of fthe lower shoe :1;

Qlof the temperature and wear compensating assembly. Y

. vThe lower shoe2t Vfsaid` ass'embly 1 double concave "in construction and is pron vided with lubricating grooves and passages to provide yfor effective lubrication of the valve 8, said shoe having; preferably central lubricating passage 26, connected with a diagonalpassage28, which diagonal passage Vconnects with a cross-groove' 30,011 one sur;

face of said shoe, anden .theVv otherwith a longitudinal lubri'cating` groove 32. Y j

T he upper shoeof saidassenibly is desig-v nated by the reference numeral 34, and has a thorough lubricating tpassagey adapted .at all tiniesy to bein fluid Connection with the passa-gc 38 in the cover 16, to which may be connected a source of lubricant supply.

The upper surface of the shoe 34 has a cross lubricating groove 40 influid connection with the passages 36, and a lower lubricating groove 42, also in fluid connection with said passage so that the upper and lower surfaces of said shoe are continually lubricated.

Y The upper surface of the shoe-34 is so constructed that it will adapt itself to the taper of the inner wall of the cover 16, so there will be a continual wedging action of the shoe assembly under pressure of the spring asseinbly .20, sufficient clearance in the valve casing 4 being provided to that end, which in practice is quite slight. See Fig. l.

It has been found in practice that there are inaccuracies due to faulty machining, so that the shoes are not all uniform. To compensate for said inaccuracies the shoe 34 may be provided with slots or cut-out portions 44, extending preferably from each end across the entire sides ofsaid shoe, which slots or cut-out portions render said shoe more elastic so that an accurate fit is at all times maintained between the shoes 24 and 34.

The valve casing 4 is also provided with a cut-out portion 46 (Fig. l) in fluid connection with the groove 30 of the shoe 24, whereby the cntireperiphery of the Vvalve 8 will be lubrid'ated.

l As the valve 8 is rotated in .the direction of the arrow shown in Fig. 1, the compensating shoe assembly has a wedging action in respect thereto, being urged to said valveby reason of the spring assembly 2O alongthe inclined inner wall of the'cover 16, the upper shoe 34, also having a relative arcuate movement with respect to the lower shoe 24, thus effectively compensating for all varying conditionsof temperature and wear, the lubricating passages and grooves at all times effectivelyl lubricating all engaging and rubbing surfaces. n Y

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus is only illustrative, and that the invention can beearried out by other means.

I claim as my invention:

l. In a valve construction, in combination with a double-concave shoe, a plano-convex shoe provided with cut-out portions in the sides thereof for rendering said plano-convex shoe more elastic.

l 2. An upper compensating shoe adapted for special use in connection with valve constructions, said upper shoe in combination with a lower shoe having an upper plane surface and a lower convex surface, there being a set of transverse slots associated with said shoe for rendering same more elastic.

3. An upper compensating shoe in combination with a lower shoe having an upper plane surface and a lower convex surface, said upper shoe being provided at its sides and ends with a setof slots to renderv said shoe more elastic.

- 4. An upper compensating shoe provided with a plane surfacevand a convex surface, in combinationwith a, lower shoe, said upper shoe being provided with a lubricating passage .therethrough in fluid connection with lubricating grooves in said plane surface and said convex surface, said shoe being also provided witha set of slots to render said shoe more elastic. 4

5. A doubleconcave compensating shoe adapted for use in connection with another shoe in valve constructions, said 4double-'concave shoe being provided with a lubricating 6. A temperature and wear compensating means for internal combustion engines comprising a plano-convex upper shoe provided with cut-outportions in the sides thereof for rendering said shoe `more elastic, and a double-concave lower shoe in juxtaposition with said upper shoe and adapted both for relative' and simultaneous movement therewith, said shoes havingsets of lubricating grooves in thesurfaces thereof and connected by lubricating passages. f

7. VA double concave and convex compensating shoe assembly for the rotary valves of internal'combustion engines comprising a pair of lsimultaneously and relatively movable l ros members, each provided with upper and lower i grooves and through passages in fluidconnection with each other connected to a source of lubricant whereby the engaging and'rubbing surfacesmay be continually lubricated.'

8.v vIn aninternalcombustion engine, a valve casing,a cover for said casing having an inner inclined surface, a rotary valve in said casing,

' and a temperature and wear compensating assembly adapted to have a wedging action between said inner surface` and'said valve,'4said 'i assembly comprising upper and lower lmembers, said upper memberpbeiiig provided with upper and lower grooves y'connected by a through passage and connected to a sourcel of lubricant supply, said lower member being provided' with upper and lower grooves in fluid connection with a diagonal through passage uhereby said surface, said valve and the engaging surfaces of said assembly are continually lubricated. y

9. A double concave and convex temperature and wear compensating shoe assembly oftwo parts, each part being provided with upper and lower cut-away portions and through passages Connected to a source of 1ubrieant whereby all rubbing and engaging surfaces of said assembly will be continually lubricated. Y In testimony whereof I have signed my name to this speeication.

HARVEY H. HALLER. 

